Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Polycarboxylic acid water reducer for early strength concrete and preparation method thereof
The invention provides a polycarboxylic acid water reducer for early strength concrete and a preparation method thereof. The polycarboxylic acid water reducer for early strength concrete comprises, bymass, 24 to 30 percent of an esterification monomer, 0.07 to 0.15 percent of hydrogen peroxide, 2.0 to 3.5 percent of acrylic acid, 1.0 to 2.0 percent of dimethyl dipropyl ammonium chloride, 0.11 to0.20 percent of mercaptoacetic acid, 0.03 to 0.10 percent of L-ascorbic acid, 0.03 to 0.07 percent of sodium hydroxide and the balance of deionized water, wherein acrylic acid, dimethyl dipropyl ammonium chloride and deionized water are mixed to form a material A and mercaptoacetic acid, L-ascorbic acid and deionized water are mixed to form a material B. During use, the material A and the materialB are mixed with the esterification monomer. The polycarboxylic acid water reducer for early strength concrete is mild in concrete working performance and suitable for mechanical vibration and manualvibration, bubbles of the concrete added with the polycarboxylic acid water reducer for early strength concrete can be rapidly discharged, bubbles generated inside and outside the concrete can be effectively reduced, and the compactness of the concrete can be improved.
本发明提供一种用于早强混凝土的聚羧酸减水剂及其制备方法，该用于早强混凝土的聚羧酸减水剂，以质量百分比计，包括24‑30％的酯化单体、0.07‑0.15％的双氧水、2.0‑3.5％的丙烯酸、1.0‑2.0％的二甲基二炳基氯化铵、0.11‑0.20％的巯基乙酸、0.03‑0.10％的L‑抗坏血酸、0.03‑0.07％的氢氧化钠，余量为去离子水；其中，丙烯酸、二甲基二炳基氯化铵和去离子水混合形成A料，巯基乙酸、L‑抗坏血酸和去离子水混合形成B料；在使用时将所述A料、B料与酯化单体混合。添加了混凝土工作性能中比较柔软，适合机械振捣和人工振捣，有利于本发明用于早强混凝土的聚羧酸减水剂的混凝土的气泡快速排出，有效减少混凝土内部和外表的气泡产生，且利于提高混凝土的密实性。
Polycarboxylic acid water reducer for early strength concrete and preparation method thereof
The invention provides a polycarboxylic acid water reducer for early strength concrete and a preparation method thereof. The polycarboxylic acid water reducer for early strength concrete comprises, bymass, 24 to 30 percent of an esterification monomer, 0.07 to 0.15 percent of hydrogen peroxide, 2.0 to 3.5 percent of acrylic acid, 1.0 to 2.0 percent of dimethyl dipropyl ammonium chloride, 0.11 to0.20 percent of mercaptoacetic acid, 0.03 to 0.10 percent of L-ascorbic acid, 0.03 to 0.07 percent of sodium hydroxide and the balance of deionized water, wherein acrylic acid, dimethyl dipropyl ammonium chloride and deionized water are mixed to form a material A and mercaptoacetic acid, L-ascorbic acid and deionized water are mixed to form a material B. During use, the material A and the materialB are mixed with the esterification monomer. The polycarboxylic acid water reducer for early strength concrete is mild in concrete working performance and suitable for mechanical vibration and manualvibration, bubbles of the concrete added with the polycarboxylic acid water reducer for early strength concrete can be rapidly discharged, bubbles generated inside and outside the concrete can be effectively reduced, and the compactness of the concrete can be improved.
本发明提供一种用于早强混凝土的聚羧酸减水剂及其制备方法，该用于早强混凝土的聚羧酸减水剂，以质量百分比计，包括24‑30％的酯化单体、0.07‑0.15％的双氧水、2.0‑3.5％的丙烯酸、1.0‑2.0％的二甲基二炳基氯化铵、0.11‑0.20％的巯基乙酸、0.03‑0.10％的L‑抗坏血酸、0.03‑0.07％的氢氧化钠，余量为去离子水；其中，丙烯酸、二甲基二炳基氯化铵和去离子水混合形成A料，巯基乙酸、L‑抗坏血酸和去离子水混合形成B料；在使用时将所述A料、B料与酯化单体混合。添加了混凝土工作性能中比较柔软，适合机械振捣和人工振捣，有利于本发明用于早强混凝土的聚羧酸减水剂的混凝土的气泡快速排出，有效减少混凝土内部和外表的气泡产生，且利于提高混凝土的密实性。
Polycarboxylic acid water reducer for early strength concrete and preparation method thereof
用于早强混凝土的聚羧酸减水剂及其制备方法
YE TE (Autor:in) / WU WEIWEI (Autor:in) / LI ZHONGCHENG (Autor:in) / ZHAO LEI (Autor:in) / TANG XUDONG (Autor:in)
08.05.2020
Patent
Elektronische Ressource
Chinesisch
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